Difference between the angles of edge projections and the angles of the intersections of surfaces and coordinate planes are raised in this paper.
同时区分了刀刃在坐标平面上的投影角和刀面相对坐标平面的倾斜角，并用实例计算说明这两种角度有时差值较大。
Studed the blending of implicit algebraic surfaces with the intersections on planes by using algebraic geometry.
利用计算代数几何工具，研究了平面截口的隐式代数曲面的光滑拼接问题。
The planar components and straight line components of the quadric surfaces intersections are studied precisely by means of matrix algebra in this paper.
本文利用特征多项式方程使得二次曲面交线的平面曲线分支的求解简化成平面与二次曲面求交问题。
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